/Engine/Source/Editor/ViewportInteraction/Public/VIBaseTransformGizmo.h
Updates the visibility of all the handles
void UpdateHandleVisibility ( const EGizmoHandleTypes InGizmoType, const ECoordSystem InGizmoCoordinateSpace, bool bInAllHandlesVisible, [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * DraggingHandle )